1ICI

CRYSTAL STRUCTURE OF A SIR2 HOMOLOG-NAD COMPLEX

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1icia1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Sir2 family of transcriptional regulators	AF1676, Sir2 homolog (Sir2-AF1?)	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)
A	d1icia2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)
B	d1icib_	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Sir2 family of transcriptional regulators	AF1676, Sir2 homolog (Sir2-AF1?)	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8032643	3001728	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8032643	3001728	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	SIR2_1st	e1iciA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: SIR2_1st	ECOD (1.6)
A	Zn-ribbon_8	e1iciA1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: Zn-ribbon_8	ECOD (1.6)
B	SIR2_1st	e1iciB2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: SIR2_1st	ECOD (1.6)
B	Zn-ribbon_8	e1iciB1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: Zn-ribbon_8	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1220	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	TPP-binding domain	CATH (4.3.0)
A	3.30.1600.10	Alpha Beta	2-Layer Sandwich	SIR2/SIRT2 'Small Domain'	SIR2/SIRT2 'Small Domain'	CATH (4.3.0)
B	3.40.50.1220	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	TPP-binding domain	CATH (4.3.0)
B	3.30.1600.10	Alpha Beta	2-Layer Sandwich	SIR2/SIRT2 'Small Domain'	SIR2/SIRT2 'Small Domain'	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02146	Sir2 family (SIR2)	Sir2 family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	TRANSCRIPTIONAL REGULATORY PROTEIN, SIR2 FAMILY	NAD+ binding NAD binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding heterocyclic compound binding small molecule binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides hydrolase activity NAD+ binding NAD binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding heterocyclic compound binding small molecule binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides hydrolase activity catalytic activity protein-succinyllysine desuccinylase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds cation binding transition metal ion binding zinc ion binding metal ion binding deacetylase activity protein lysine deacetylase activity catalytic activity, acting on a protein NAD-dependent protein deacetylase activity protein-malonyllysine demalonylase activity transferase activity	-	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR026591	Sirtuin, catalytic core small domain superfamily	Homologous Superfamily
A, B	IPR027546	Sirtuin, class III	Family
A, B	IPR003000	Sirtuin family	Family
A, B	IPR026590	Sirtuin family, catalytic core domain	Domain
A, B	IPR029035	DHS-like NAD/FAD-binding domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.